package com.zhangyuji.filter;

import com.alibaba.fastjson.JSON;
import com.zhangyuji.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Slf4j
@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {

    public static final AntPathMatcher ANT_PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String requestURI = request.getRequestURI();

        long id = Thread.currentThread().getId();
        log.info("id{}",id);


        String[] urls = {
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/user/sendMsg",
                "/user/login",
                "/user/out",

        };
        boolean flag = check(urls, requestURI);
        if(flag){
            filterChain.doFilter(request,response);
            return;
        }


        if (request.getSession().getAttribute("employee") != null){
            filterChain.doFilter(request,response);
            return;
        }

        if (request.getSession().getAttribute("user") != null){
            filterChain.doFilter(request,response);
            return;
        }
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;
    }

    public  boolean check(String[] urls,String requestURI){
        for (String url : urls) {
            boolean match = ANT_PATH_MATCHER.match(url, requestURI);
            if (match){
                return true;
            }
        }
        return false;
    }
}
